I agree with syzygy. My son was diagnosed at 16 and I knew he would find himself in situations where alcohol and drugs were involved. If he was going to be tempted to try them, I thought it was important that he have 'real' information and not only have info influenced by my preference/worry. At one of our apptmts, I specifically asked the doctor to speak to him about drugs and alcohol and their impact on crohns and interactions with meds and I left the room so that they could speak openly.
No doubt your doctor will likely discourage the use of both as alcohol can be inflammatory (I'm fairly sure??) and marijuana is illegal and may give you his opinion of what he thinks, however, I don't believe he will withhold medical information re interactions, etc. And, unless there are some unusual circumstances, I do believe your request for privacy in this type of conversation will be respected.
FWIW, while I don't know the outcome of my son's conversation re drugs, I do know his GI said some alcohol, within reason, should be okay. I know my son has had alcohol and it doesn't seem to have an affect on him (BTW, he is also on remicade).
One thing I have stressed to my son is that I do believe he should be much more conscious of what he's putting into his body simply because of the remicade and, even more conscious of it immediately before/after infusions as that's when I imagine the concentration of remicade in your body would be highest.
:ghug: